Finding the Fourth Proportional to 667,769.90, 921,841.62 and 381,234.62
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Solution
The fourth proportional to 667,769.90, 921,841.62 and 381,234.62 is: 526,285.99
Step by Step Solution
- Step 1: Write the proportion equation
667,769.90 : 921,841.62 = 381,234.62 : x - Step 2: Convert to fraction form
667,769.90/921,841.62 = 381,234.62/x - Step 3: Cross multiply
667,769.90x = 921,841.62 × 381,234.62 - Step 4: Simplify right side
667,769.90x = 351,437,939,700.88 - Step 5: Solve for x
x = 351,437,939,700.88/667,769.90 - Step 6: Final answer
x = 526,285.99
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.